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A015121 as a triangular array

1
11
1-81
173731
1-6565986-6561
1590548421048421059051
1-5314439226915-35250488039226915-531441
1478297317732697125701528443525701528443531773269714782971
1-4304672257363962948

A015121 as a square array

111111111
1-873-6565905-53144478297-4304672
1735986484210392269153177326971257363962948
1-656484210-352504880257015284435
1590539226915257015284435
1-531443177326971
1478297
1
111111111
1-873-6565905-53144478297-4304672
1735986484210392269153177326971257363962948
1-656484210-352504880257015284435
1590539226915257015284435
1-531443177326971
1478297
1